#！ /bin/bash
function hello() {
    echo "hello, world!"
}

function tell_who_i_am() {
   echo $(whoami)
}

function which_distro_do_i_use(){
   echo $(cat /etc/os-release | grep ^NAME)
}

function view_my_cpu_arch(){
    echo $(uname -m)
}

function show_first_scsi_disk_size(){
    echo $(lsblk -l | \grep disk | \grep '^sda' |awk '{print $4}')
}

function show_main_memory_size_in_megabytes(){
    echo $(free -m | grep "Mem:" |awk '{print $2}')
}
